/Engine/Source/Editor/MeshPaint/Public/MeshPaintHelpers.h
Sets the specific (LODIndex) per-instance vertex colors for the given StaticMeshComponent to the supplied Color array
static void SetInstanceColorDataForLOD ( [UStaticMeshComponent](API\Runtime\Engine\Components\UStaticMeshComponent) * MeshComponent, int32 LODIndex, const [TArray](API\Runtime\Core\Containers\TArray)< [FColor](API\Runtime\Core\Math\FColor) > & Colors )